The average diastolic blood pressure of a group of men suffering from high blood pressure is

96 \mathrm {~mm} \mathrm { Hg } .

During a clinical trial,the men receive a medication which it is hoped will lower their blood pressure.After three months,the researcher wants to perform a hypothesis test to determine whether the average diastolic blood pressure of the men has decreased.The hypotheses are: H0: ? =

96 \mathrm {~mm} \mathrm { Hg }

HA: ? <

96 \mathrm {~mm} \mathrm { Hg }

Explain the result of a Type II error.
A)The researcher will conclude that the average diastolic blood pressure of the men is the same when in fact it is the same.
B)The researcher will conclude that the average diastolic blood pressure of the men has decreased when in fact it has increased.
C)The researcher will conclude that the average diastolic blood pressure of the men has increased when in fact it has decreased.
D)The researcher will not conclude that the average diastolic blood pressure of the men has decreased when in fact it has decreased.
E)The researcher will conclude that the average diastolic blood pressure of the men has decreased when in fact it is the same.

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